Shadrinsk Yastremskaya YuliaA. Shadrinsk State Pedagogical University, 3 Karl Liebknecht St., Shadrinsk 641870, Kurgan Region, Russia ja22-4@bk.ru Read more about Yastremskaya Yulia A. Shupletsova Yulia A. Shadrinsk State Pedagogical University, 3 Karl Liebknecht St., Shadrinsk 641870, Kurgan Region, Russia 5ok@bk.ru Read more about Shupletsova Yulia A.